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JPL Small-Body Database Browser
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18874 Raoulbehrend (1999 VZ22)
Classification: Main-belt Asteroid          SPK-ID: 2018874
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1060157048291644 3.9375e-08  
a 2.273168989996125 7.3488e-09 au
q 2.032177377325886 9.1725e-08 au
i 4.470493240582543 3.7736e-06 deg
node 103.5427496904914 5.4753e-05 deg
peri 274.2152537038291 5.7791e-05 deg
M 28.18517133315196 1.8557e-05 deg
tp 2458902.491399094833
(2020-Feb-22.99139909)
6.4434e-05 TDB
period 1251.831890919163
3.43
6.0705e-06
1.662e-08
d
yr
n .2875785499726073 1.3945e-09 deg/d
Q 2.514160602666364 8.1279e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1242  
   data-arc span      23852 days (65.30 yr)  
   first obs. used      1954-08-08  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54582  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:54:29  

Additional Information
 Earth MOID = 1.03967 au 
 Jupiter MOID = 2.91738 au 
 T_jup = 3.600 
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Orbital Elements at Epoch 2456786.5 (2014-May-09.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1067398108005161 3.9498e-08  
q 2.030955562213848 9.2165e-08 au
tp 2456398.445082590404
(2013-Apr-15.94508259)
6.2379e-05 TDB
node 103.583638146803 5.4795e-05 deg
peri 274.1572031176652 5.7762e-05 deg
i 4.469011431485476 3.7717e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1242  
   data-arc span      23852 days (65.30 yr)  
   first obs. used      1954-08-08  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54582  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:54:29  

Additional Information
 Jupiter MOID = 2.91738 au 
 T_jup = 3.600 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.560130078346074E-15 -3.631923066219955E-15 -2.74862723917753E-13 7.692378459263457E-15 -8.29752644883841E-14 -4.500124359738992E-16
q -3.631923066219955E-15 8.494460442412501E-15 6.25942517906175E-13 -1.835176480330421E-14 1.921415756176894E-13 1.124454374100778E-15
tp -2.74862723917753E-13 6.25942517906175E-13 3.89109446639085E-9 -2.32201773896938E-11 1.157918946537909E-9 3.397407290988784E-13
node 7.692378459263457E-15 -1.835176480330421E-14 -2.32201773896938E-11 3.002539280791046E-9 -2.999763190218022E-9 2.130444298880824E-11
peri -8.29752644883841E-14 1.921415756176894E-13 1.157918946537909E-9 -2.999763190218022E-9 3.336482406199099E-9 -2.113059481392862E-11
i -4.500124359738992E-16 1.124454374100778E-15 3.397407290988784E-13 2.130444298880824E-11 -2.113059481392862E-11 1.422609425011043E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO344452  
rotation period rot_per 5.3436 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

18874 Raoulbehrend           Discovered 1999 Nov. 8 by S. Sposetti at Gnosca.
Raoul Behrend (b. 1964) is a Swiss astronomer living in the French-speaking part of Switzerland. He is a specialist in stellar modeling but astrometry and photometry of minor planets are among his interests, too. He also strongly supports the collaboration between professional and amateur astronomers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1999 VZ22 = 1995 ML = 1998 KT39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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